Beefheart’s first proper studio album is a much more accessible, pop-inflected brand of blues-rock than the efforts that followed in the late ’60s — which isn’t to say that it’s exactly normal and straightforward. Featuring Ry Cooder on guitar, this is blues-rock gone slightly askew, with jagged, fractured rhythms, soulful, twisting vocals from Van Vliet, and more doo wop, soul, straight blues, and folk-rock influences than he would employ on his more avant-garde outings. “Zig Zag Wanderer,” “Call on Me,” and “Yellow Brick Road” are some of his most enduring and riff-driven songs, although there’s plenty of weirdness on tracks like “Electricity” and “Abba Zaba.”